Serious answer: sexuality is much more complicated and doesn't only involve sexual organs. Sexuality encompasses a social and cultural aspect as well. Including transwomen also means including women can have penises. Things like straight pegging is becoming more main stream as well. Just like how a lesbian uses a penis shaped dildo, a man using a dildo isn't necessarily gay, bi, or pan. There's also a biological function as well. Women and men did evolve concurrently together which means our genitals "fit together" which may explain why some people prefer a penis like dildo. I think this idea gets supported as we look at the plethora of dildo adjusted and created to really hit the spot like bad dragons and others.